<template>
    <div>
      <!--面包屑导航区-->
     <el-breadcrumb separator-class="el-icon-arrow-right">
           <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
           <el-breadcrumb-item>数据统计</el-breadcrumb-item>
           <el-breadcrumb-item>数据报表</el-breadcrumb-item>
       </el-breadcrumb>
       <!--卡片视图区-->
       <el-card>
        <!-- 2.为 ECharts 准备一个定义了宽高的 DOM -->
        <div id="main" style="width:80%;height:460px;"></div>
     </el-card>
    </div>
</template>

<script>
//1.导入echarts
import echarts from 'echarts'
import _ from 'lodash'
export default{
    data(){
        return{
            //options是需要合并的数据
            options: {
            title: {
            text: '用户来源'
            },
            tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'cross',
                label: {
                backgroundColor: '#E9EEF3'
                }
            }
            },
            grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
            },
            xAxis: [
            {
                boundaryGap: false
            }
            ],
            yAxis: [
            {
                type: 'value'
            }
            ]
        },
            }
    },
    created(){},
    //此时，页面上的元素，已经被渲染完毕了
    async mounted() {
         // 3.基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'));
      // 指定图表的配置项和数据
       const {data:res}= await this.$http.get(`reports/type/1`)
       if(res.meta.status!==200)return this.$message.error('获取折线图数据失败')           
    //4，准备数据和配置
       const result= _.merge(res.data,this.options)
      //5.展示数据
      myChart.setOption(result);
    },
    methods:{

    }
}
</script>

<style lang="less" scoped>
</style>